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(No Model.)

W. K. CROPFORD.

DOOR FOR HOISTWAYS.

No. 373,053. I Patented Nov. 15, 1337.

l/VVENTOH 8} W260, 6% MM ATTORNEY-5.

N4 PETERS. Photo-Ulhngmpfmr. Washington. D, C.

'WARREN K. OROF FORD, OF NEWV YORK, N. Y., A SSIGNOR TO YVILLIAMBARDSLEY, OF KEARNEY TOWNSHIP, NEW' JERSEY.

DOOR FOR HOlSTWAYS.

SPECIFICATIONforming part of Letters Patent No. 373,053, dated November15, 1887.

Application filed Mitit'll I7, 1887.

ways, of which the following is a specification.

The invention relates to improvements in doors for hoistways, andparticularly to a novel construction and arrangement of operative parts,whereby slides arranged one at each side edge of the door may be given asimultaneous lateral movement outward beyond said edges during theclosing of the door, and inward from over said edges during the openingof the door, the purpose of the slides being, when the door is closed,to cover the customary spaces between the side edges of the door and theadjacent surfaces forming the walls of the hoistway. It is essentialthat the slides have a quick movement inward during the first part ofthe opening ofthe door and acorresponding movement outward during thelatter part of the closing of the door, theslides operating only duringa portion of the movement of the door. To effect this movement of theslides in a manner which renders their use efficient in every particularis the object of the invention, and this is accomplished by means of anoperative combination of elements, hereinafter described, especiallyconstructed and arranged to insure the proper movement of the slideswith certainty and safety. One door, with the slides and operativedevices,will be arranged at each floor of the building. In the drawings,however, I illustrate but one door, this being sufficient to fullydemonstrate the construction and operation of the invention.

In the accompanying drawings, Figurelis a vertical section on the linemm of Fig. 2, which is a top view of the door and attachments, the frameof the hoistway, together with the side bars for'guiding the elevatortherein, being illustrated in section.

A denotes the hoistway or elevator-shaft; B, the frame-work around thesame; 0, the side bars or guides for the elevator, and D the door, whichis hinged at E,and is adapted to be openedor closed by means of a rope,E, passing over suitable pulleys.

The rope E forms no part of the present in- Serial No. 231.2. (Nomodel.)

vention, since it is the usual rope in use by means of which the doormay be opened up ward upon its hinges. By drawing downward upon the endof the rope E it will open the door D, and then,when the tension on therope is relieved, the weight of the door D will cause the latter toclose over the hoistway. The slides G are arranged upon the uppersurface of the door, one being at each side thereof, and being of equallength with the door, in order that when moved outward, as shown in Fig.

2, they will-close the spaces between the side edges of the same and thewalls of the hoistway. The slides G are provided with the lateral arms HH, respecti vely, which pass th rough and are in part sustained by theguides I I, respectively, secured upon the upper surface of the door.

Upon the upper surface of the door is arranged, in a guide, J, the frontportion of the bar K, which consists of two parts hinged to gether at L,the upper part being hinged to the wall at M, (see Fig. 1,) whereby,when the doorD is either opened or closed, the front part of the bar Kmay have a longitudinal sliding movement upon the face of the doorwithout da'nger of the same becoming broken or disarranged, the hingesoperating during this movement to allow the front portion of the bar thesliding movement, while the guide J retains it in close relation to thedoor. The front end of the bar K is provided upon opposite sides withrecesses N and lateral extensions 0, which are within, and during theopening and closing of the door are directed 'by guides 1?.

Upon the face of the door, and at opposite sides of the front portion ofthe bar K, are secured, by pivots Q, the levers R, the short arms ofwhich are engaged by the recesses N in the bar K, while their longerarms extend outward upon an angle from the bar K, and have pivoted totheir ends the links S, which serve to connect said levers with theslides G G.

In the operation of the moving elements the front portion of the bar Kslides forward during the opening of the door D, and during thismovement presses against the shorter arms of of the door, thuspermitting the full opening of the door without danger of the slidesbeing broken by coming into contact with the side guidebars, O. Theslides G G will remain wholly upon the surface of the door while thelatter is open; but during the-latter part of the closing of the samethe bar K will be brought to its former position, and during its moveincut the lateral extensions 0 will press against the shorter arms of thelevers R, causing the said levers to turn upon their pivots Q to theirformer position, being that shown in Fig. 2, which has the etfect offorcing the links 8 and slides G outward, the latter being moved overthe edges of the door against the side walls of the hoistway, andclosing the spaces, which, without thesiides, would beleft open andprove to be a serious objection.

I am aware that the slides G G alone are not new on hoistway-doors, andI am also aware that bell-crank levers and ropes have been arranged tomove said slides; but, after careful study ofthesubject I am convincedthat neither the belLcrauk lever nor the ropes have been entirelysatisfactory, and that no movement so effectually adapted forhoistwaydoors as 1 secure could possibly be obtained by any meansheretofore constructed for the purpose.

The toggle-levers and links forming apart of my invention differ intheir construction, arrangement, and effect, and the prom ptness andcertainty of their action at the proper time from any device known to mefor operating the s1ides,and effectually accomplish the purposes oftheir production.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. In combination with ahoistway-door, the slides G G at opposite edgesof the door, the bar K, formed of two parts hinged together and adaptedto have a sliding movement during the operation of opening and closingthe door, the levers R, pivoted upon the door andv vided with the slidesG Gat opposite edges thereof, the bar K, adapted to slide upon the doorin a guide and provided with the recesscs N, the levers R, pivoted uponthe face of the door and having their shorter arms engaged by saidrecesses and their longer arms connected with the slides G G by means ofthe pivoted links S S, substantially as set forth.

Signed at New York, in the county of New York and State of New York,this 16th day of March, A. D. 1887.

WARREN K. GROFFORD.

\Vitncsses: r a a i i W ILLIAM BARDSLEY, CHAS. O. GILL.

